Provided by: rxvt-unicode_9.31-1_amd64 
NAME
urxvtperl - rxvt-unicode's embedded perl interpreter
SYNOPSIS
# create a file grab_test in some directory:
sub on_sel_grab {
warn "you selected ", $_[0]->selection;
()
}
# start a urxvt instance using it:
urxvt --perl-lib path/to/somedirectory -pe grab_test
DESCRIPTION
Every time a terminal object gets created, extension scripts specified via the "perl"
resource are loaded and associated with it.
Scripts are compiled in a 'use strict qw(vars subs)' and 'use utf8' environment, and thus
must be encoded as UTF-8.
Each script will only ever be loaded once, even in urxvtd, where scripts will be shared
(but not enabled) for all terminals.
You can disable the embedded perl interpreter by setting both "perl-ext" and "perl-ext-
common" resources to the empty string.
PREPACKAGED EXTENSIONS
A number of extensions are delivered with this release. You can find them in
<libdir>/urxvt/perl/, and the documentation can be viewed using man urxvt-<EXTENSIONNAME>.
You can activate them like this:
urxvt -pe <extensionname>
Or by adding them to the resource for extensions loaded by default:
URxvt.perl-ext-common: default,selection-autotransform
Extensions may add additional resources and "actions", i.e., methods which can be bound to
a key and invoked by the user. An extension can define the resources it support using so
called META comments, described below. Similarly to builtin resources, extension resources
can also be specified on the command line as long options (with "." replaced by "-"), in
which case the corresponding extension is loaded automatically. For this to work the
extension must define META comments for its resources.
API DOCUMENTATION
General API Considerations
All objects (such as terminals, time watchers etc.) are typical reference-to-hash objects.
The hash can be used to store anything you like. All members starting with an underscore
(such as "_ptr" or "_hook") are reserved for internal uses and MUST NOT be accessed or
modified).
When objects are destroyed on the C++ side, the perl object hashes are emptied, so its
best to store related objects such as time watchers and the like inside the terminal
object so they get destroyed as soon as the terminal is destroyed.
Argument names also often indicate the type of a parameter. Here are some hints on what
they mean:
$text
Rxvt-unicode's special way of encoding text, where one "unicode" character always
represents one screen cell. See ROW_t for a discussion of this format.
$string
A perl text string, with an emphasis on text. It can store all unicode characters and
is to be distinguished with text encoded in a specific encoding (often locale-
specific) and binary data.
$octets
Either binary data or - more common - a text string encoded in a locale-specific way.
$keysym
an integer that is a valid X11 keysym code. You can convert a string into a keysym and
viceversa by using "XStringToKeysym" and "XKeysymToString".
Extension Objects
Every perl extension is a perl class. A separate perl object is created for each terminal,
and each terminal has its own set of extension objects, which are passed as the first
parameter to hooks. So extensions can use their $self object without having to think about
clashes with other extensions or other terminals, with the exception of methods and
members that begin with an underscore character "_": these are reserved for internal use.
Although it isn't a "urxvt::term" object, you can call all methods of the "urxvt::term"
class on this object.
Additional methods only supported for extension objects are described in the
"urxvt::extension" section below.
META comments
Rxvt-unicode recognizes special meta comments in extensions that define different types of
metadata. These comments are scanned whenever a terminal is created and are typically used
to autoload extensions when their resources or command line parameters are used.
Currently, it recognises these comments below. Individual components are separated by
colons (":"), and should not contain colons themselves - there is also currently no
escaping mechanism provided for this.
#:META:RESOURCE:name:type:desc
The RESOURCE comment defines a resource used by the extension, where "name" is the
resource name, "type" is the resource type, "boolean" or "string", and "desc" is the
resource description.
The extension will be autoloaded when this resource is specified or used as a command
line parameter.
Example: matcher provides the "matcher.launcher" resource by having this comment:
#:META:RESOURCE:%.launcher:string:default launcher command
Example: load this extension when the "-tr" command line option or resource name is
used.
#:META:RESOURCE:tr:boolean:set root pixmap as background
#:META:OSC:number:desc
The OSC comment specifies an OSC sequence, where "number" is the numerical OSC code
and "desc" is a short description that is currently unused.
This will cause the extension to be autoloaded when the OSC sequence is used for the
first time.
Note that autoloading carries some extra responsibilities with it: although the
terminal cannot really protect itself against malicious sources of command sequences,
therefore relying on the programs running inside to sanitize data that they output, it
is very common for programs to emit command sequences from untrusted sources.
While this means that extensions should, as a defense-in-depth mechanism, always
consider whether OSC sequences are safe, autoloading automatically exposes any
autoloaded extension in all terminal windows, so extra care should be taken.
Example: the background extension registers OSC 20 like this:
#:META:OSC:20:change/query background image
#:META:OSC_PERL:prefix:desc
The same as the OSC comment, but for the Perl OSC sequence (777). The "prefix" should
be unique among extensions, of course, which is most easily arranged by using the
extension name, although this is not required.
Example: the overlay-osc extension registers its Perl OSC like this:
#:META:OSC_PERL:overlay:man overlay-osc
Hooks
The following subroutines can be declared in extension files, and will be called whenever
the relevant event happens.
The first argument passed to them is an extension object as described in the in the
"Extension Objects" section.
All of these hooks must return a boolean value. If any of the called hooks returns true,
then the event counts as being consumed, and the relevant action might not be carried out
by the C++ code.
When in doubt, return a false value (preferably "()").
on_attach $term
Called when an extension package is attached to a running terminal instance. Must
return true in all cases, and runs with the same limitations as "on_init".
Unlike "on_init" or "on_start", this is called when the extension is attached to a
terminal, regardless of whether the extension is loaded before or after the terminal
is started. Extensions that need to do something before they work can do it in this
callback, as opposed to e.g. "on_init", which might not be called.
on_init $term
Called after a new terminal object has been initialized, but before windows are
created or the command gets run. Most methods are unsafe to call or deliver senseless
data, as terminal size and other characteristics have not yet been determined. You can
safely query and change resources and options, though. For many purposes the
"on_start" hook is a better place.
on_start $term
Called at the very end of initialisation of a new terminal, just before trying to map
(display) the toplevel and returning to the main loop.
on_destroy $term
Called whenever something tries to destroy terminal, when the terminal is still fully
functional (not for long, though).
on_reset $term
Called after the screen is "reset" for any reason, such as resizing or control
sequences. Here is where you can react on changes to size-related variables.
on_child_start $term, $pid
Called just after the child process has been "fork"ed.
on_child_exit $term, $status
Called just after the child process has exited. $status is the status from "waitpid".
on_sel_make $term, $eventtime
Called whenever a selection has been made by the user, but before the selection text
is copied, so changes to the beginning, end or type of the selection will be honored.
Returning a true value aborts selection making by urxvt, in which case you have to
make a selection yourself by calling "$term->selection_grab".
on_sel_grab $term, $eventtime
Called whenever a selection has been copied, but before the selection is requested
from the server. The selection text can be queried and changed by calling
"$term->selection".
Returning a true value aborts selection grabbing. It will still be highlighted.
on_sel_extend $term
Called whenever the user tries to extend the selection (e.g. with a double click) and
is either supposed to return false (normal operation), or should extend the selection
itself and return true to suppress the built-in processing. This can happen multiple
times, as long as the callback returns true, it will be called on every further click
by the user and is supposed to enlarge the selection more and more, if possible.
See the selection example extension.
on_view_change $term, $offset
Called whenever the view offset changes, i.e. the user or program scrolls. Offset 0
means display the normal terminal, positive values show this many lines of scrollback.
on_scroll_back $term, $lines, $saved
Called whenever lines scroll out of the terminal area into the scrollback buffer.
$lines is the number of lines scrolled out and may be larger than the scroll back
buffer or the terminal.
It is called before lines are scrolled out (so rows 0 .. min ($lines - 1, $nrow - 1)
represent the lines to be scrolled out). $saved is the total number of lines that will
be in the scrollback buffer.
on_osc_seq $term, $op, $args, $resp
Called on every OSC sequence and can be used to suppress it or modify its behaviour.
The default should be to return an empty list. A true value suppresses execution of
the request completely. Make sure you don't get confused by recursive invocations when
you output an OSC sequence within this callback.
"on_osc_seq_perl" should be used for new behaviour.
on_osc_seq_perl $term, $args, $resp
Called whenever the ESC ] 777 ; prefix ; string ST command sequence (OSC = operating
system command) is processed. Cursor position and other state information is up-to-
date when this happens. For interoperability, the argument should start with the
extension name (sans -osc) or some other suitable prefix, and a semicolon, to
distinguish it from commands for other extensions.
For example, "overlay-osc" uses this:
sub on_osc_seq_perl {
my ($self, $osc, $resp) = @_;
return unless $osc =~ s/^overlay;//;
... process remaining $osc string
}
Be careful not ever to trust (in a security sense) the data you receive, as its source
can not easily be controlled (e-mail content, messages from other users on the same
system etc.).
For responses, $resp contains the end-of-args separator used by the sender.
on_add_lines $term, $string
Called whenever text is about to be output, with the text as argument. You can
filter/change and output the text yourself by returning a true value and calling
"$term->scr_add_lines" yourself. Please note that this might be very slow, however, as
your hook is called for all text being output.
on_tt_write $term, $octets
Called whenever some data is written to the tty/pty and can be used to suppress or
filter tty input.
on_tt_paste $term, $octets
Called whenever text is about to be pasted, with the text as argument. You can
filter/change and paste the text yourself by returning a true value and calling
"$term->tt_paste" yourself. $octets is locale-encoded.
on_line_update $term, $row
Called whenever a line was updated or changed. Can be used to filter screen output
(e.g. underline urls or other useless stuff). Only lines that are being shown will be
filtered, and, due to performance reasons, not always immediately.
The row number is always the topmost row of the line if the line spans multiple rows.
Please note that, if you change the line, then the hook might get called later with
the already-modified line (e.g. if unrelated parts change), so you cannot just toggle
rendition bits, but only set them.
on_refresh_begin $term
Called just before the screen gets redrawn. Can be used for overlay or similar effects
by modifying the terminal contents in refresh_begin, and restoring them in
refresh_end. The built-in overlay and selection display code is run after this hook,
and takes precedence.
on_refresh_end $term
Called just after the screen gets redrawn. See "on_refresh_begin".
on_action $term, $string
Called whenever an action is invoked for the corresponding extension (e.g. via a
"extension:string" builtin action bound to a key, see description of the keysym
resource in the urxvt(1) manpage). The event is simply the action string. Note that an
action event is always associated to a single extension.
on_user_command $term, $string *DEPRECATED*
Called whenever a user-configured event is being activated (e.g. via a "perl:string"
action bound to a key, see description of the keysym resource in the urxvt(1)
manpage).
The event is simply the action string. This interface is going away in preference to
the "on_action" hook.
on_resize_all_windows $term, $new_width, $new_height
Called just after the new window size has been calculated, but before windows are
actually being resized or hints are being set. If this hook returns a true value,
setting of the window hints is being skipped.
on_x_event $term, $event
Called on every X event received on the vt window (and possibly other windows). Should
only be used as a last resort. Most event structure members are not passed.
on_root_event $term, $event
Like "on_x_event", but is called for events on the root window.
on_focus_in $term
Called whenever the window gets the keyboard focus, before rxvt-unicode does focus in
processing.
on_focus_out $term
Called whenever the window loses keyboard focus, before rxvt-unicode does focus out
processing.
on_configure_notify $term, $event
on_property_notify $term, $event
on_key_press $term, $event, $keysym, $octets
on_key_release $term, $event, $keysym
on_button_press $term, $event
on_button_release $term, $event
on_motion_notify $term, $event
on_map_notify $term, $event
on_unmap_notify $term, $event
Called whenever the corresponding X event is received for the terminal. If the hook
returns true, then the event will be ignored by rxvt-unicode.
The event is a hash with most values as named by Xlib (see the XEvent manpage), with
the additional members "row" and "col", which are the (real, not screen-based) row and
column under the mouse cursor.
"on_key_press" additionally receives the string rxvt-unicode would output, if any, in
locale-specific encoding.
on_client_message $term, $event
on_wm_protocols $term, $event
on_wm_delete_window $term, $event
Called when various types of ClientMessage events are received (all with format=32,
WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
on_bell $term
Called on receipt of a bell character.
Variables in the "urxvt" Package
$urxvt::LIBDIR
The rxvt-unicode library directory, where, among other things, the perl modules and
scripts are stored.
$urxvt::RESCLASS, $urxvt::RESCLASS
The resource class and name rxvt-unicode uses to look up X resources.
$urxvt::RXVTNAME
The basename of the installed binaries, usually "urxvt".
$urxvt::TERM
The current terminal. This variable stores the current "urxvt::term" object, whenever
a callback/hook is executing.
@urxvt::TERM_INIT
All code references in this array will be called as methods of the next newly created
"urxvt::term" object (during the "on_init" phase). The array gets cleared before the
code references that were in it are being executed, so references can push themselves
onto it again if they so desire.
This complements to the perl-eval command line option, but gets executed first.
@urxvt::TERM_EXT
Works similar to @TERM_INIT, but contains perl package/class names, which get
registered as normal extensions after calling the hooks in @TERM_INIT but before other
extensions. Gets cleared just like @TERM_INIT.
Functions in the "urxvt" Package
urxvt::fatal $errormessage
Fatally aborts execution with the given error message (which should include a trailing
newline). Avoid at all costs! The only time this is acceptable (and useful) is in the
init hook, where it prevents the terminal from starting up.
urxvt::warn $string
Calls "rxvt_warn" with the given string which should include a trailing newline. The
module also overwrites the "warn" builtin with a function that calls this function.
Using this function has the advantage that its output ends up in the correct place,
e.g. on stderr of the connecting urxvtc client.
Messages have a size limit of 1023 bytes currently.
@terms = urxvt::termlist
Returns all urxvt::term objects that exist in this process, regardless of whether they
are started, being destroyed etc., so be careful. Only term objects that have perl
extensions attached will be returned (because there is no urxvt::term object
associated with others).
$time = urxvt::NOW
Returns the "current time" (as per the event loop).
urxvt::CurrentTime
urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask,
Button1Mask, Button2Mask, Button3Mask, Button4Mask, Button5Mask, AnyModifier
urxvt::NoEventMask, KeyPressMask, KeyReleaseMask, ButtonPressMask, ButtonReleaseMask,
EnterWindowMask, LeaveWindowMask, PointerMotionMask, PointerMotionHintMask,
Button1MotionMask, Button2MotionMask, Button3MotionMask, Button4MotionMask,
Button5MotionMask, ButtonMotionMask, KeymapStateMask, ExposureMask, VisibilityChangeMask,
StructureNotifyMask, ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify, EnterNotify,
LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose, GraphicsExpose, NoExpose,
VisibilityNotify, CreateNotify, DestroyNotify, UnmapNotify, MapNotify, MapRequest,
ReparentNotify, ConfigureNotify, ConfigureRequest, GravityNotify, ResizeRequest,
CirculateNotify, CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
Various constants for use in X calls and event processing.
urxvt::PrivMode_132, PrivMode_132OK, PrivMode_rVideo, PrivMode_relOrigin, PrivMode_Screen,
PrivMode_Autowrap, PrivMode_aplCUR, PrivMode_aplKP, PrivMode_HaveBackSpace,
PrivMode_BackSpace, PrivMode_ShiftKeys, PrivMode_VisibleCursor, PrivMode_MouseX10,
PrivMode_MouseX11, PrivMode_scrollBar, PrivMode_TtyOutputInh, PrivMode_Keypress,
PrivMode_smoothScroll, PrivMode_vt52, PrivMode_LFNL, PrivMode_MouseBtnEvent,
PrivMode_MouseAnyEvent, PrivMode_BracketPaste, PrivMode_ExtMouseUTF8,
PrivMode_ExtMouseUrxvt, PrivMode_BlinkingCursor, PrivMode_mouse_report, PrivMode_Default
Constants for checking DEC private modes.
RENDITION
Rendition bitsets contain information about colour, font, font styles and similar
information for each screen cell.
The following "macros" deal with changes in rendition sets. You should never just create a
bitset, you should always modify an existing one, as they contain important information
required for correct operation of rxvt-unicode.
$rend = urxvt::DEFAULT_RSTYLE
Returns the default rendition, as used when the terminal is starting up or being
reset. Useful as a base to start when creating renditions.
$rend = urxvt::OVERLAY_RSTYLE
Return the rendition mask used for overlays by default.
$rendbit = urxvt::RS_Bold, urxvt::RS_Italic, urxvt::RS_Blink, urxvt::RS_RVid,
urxvt::RS_Uline
Return the bit that enabled bold, italic, blink, reverse-video and underline,
respectively. To enable such a style, just logically OR it into the bitset.
$foreground = urxvt::GET_BASEFG $rend
$background = urxvt::GET_BASEBG $rend
Return the foreground/background colour index, respectively.
$rend = urxvt::SET_FGCOLOR $rend, $new_colour
$rend = urxvt::SET_BGCOLOR $rend, $new_colour
$rend = urxvt::SET_COLOR $rend, $new_fg, $new_bg
Replace the foreground/background colour in the rendition mask with the specified one.
$value = urxvt::GET_CUSTOM $rend
Return the "custom" value: Every rendition has 5 bits for use by extensions. They can
be set and changed as you like and are initially zero.
$rend = urxvt::SET_CUSTOM $rend, $new_value
Change the custom value.
The "urxvt::term::extension" class
Each extension attached to a terminal object is represented by a "urxvt::term::extension"
object.
You can use these objects, which are passed to all callbacks to store any state related to
the terminal and extension instance.
The methods (And data members) documented below can be called on extension objects, in
addition to call methods documented for the <urxvt::term> class.
$urxvt_term = $self->{term}
Returns the "urxvt::term" object associated with this instance of the extension. This
member must not be changed in any way.
$self->enable ($hook_name => $cb[, $hook_name => $cb..])
Dynamically enable the given hooks (named without the "on_" prefix) for this
extension, replacing any hook previously installed via "enable" in this extension.
This is useful when you want to overwrite time-critical hooks only temporarily.
To install additional callbacks for the same hook, you can use the "on" method of the
"urxvt::term" class.
$self->disable ($hook_name[, $hook_name..])
Dynamically disable the given hooks.
$guard = $self->on ($hook_name => $cb[, $hook_name => $cb..])
Similar to the "enable" enable, but installs additional callbacks for the given
hook(s) (that is, it doesn't replace existing callbacks), and returns a guard object.
When the guard object is destroyed the callbacks are disabled again.
$self->bind_action ($hotkey, $action)
$self->x_resource ($pattern)
$self->x_resource_boolean ($pattern)
These methods support an additional "%" prefix for $action or $pattern when called on
an extension object, compared to the "urxvt::term" methods of the same name - see the
description of these methods in the "urxvt::term" class for details.
The "urxvt::anyevent" Class
The sole purpose of this class is to deliver an interface to the "AnyEvent" module - any
module using it will work inside urxvt without further programming. The only exception is
that you cannot wait on condition variables, but non-blocking condvar use is ok.
In practical terms this means is that you cannot use blocking APIs, but the non-blocking
variant should work.
The "urxvt::term" Class
$term = new urxvt::term $envhashref, $rxvtname, [arg...]
Creates a new terminal, very similar as if you had started it with system "$rxvtname,
arg...". $envhashref must be a reference to a %ENV-like hash which defines the
environment of the new terminal.
Croaks (and probably outputs an error message) if the new instance couldn't be
created. Returns "undef" if the new instance didn't initialise perl, and the terminal
object otherwise. The "init" and "start" hooks will be called before this call
returns, and are free to refer to global data (which is race free).
$term->destroy
Destroy the terminal object (close the window, free resources etc.). Please note that
urxvt will not exit as long as any event watchers (timers, io watchers) are still
active.
$term->exec_async ($cmd[, @args])
Works like the combination of the "fork"/"exec" builtins, which executes ("starts")
programs in the background. This function takes care of setting the user environment
before exec'ing the command (e.g. "PATH") and should be preferred over explicit calls
to "exec" or "system".
It also sets the "URXVT_EXT_WINDOWID" environment variable to the window ID of the
terminal ("$self->parent"), similar to the "WINDOWID" variable set for the process
spawned inside the terminal.
Returns the pid of the subprocess or "undef" on error.
$isset = $term->option ($optval[, $set])
Returns true if the option specified by $optval is enabled, and optionally change it.
All option values are stored by name in the hash %urxvt::OPTION. Options not enabled
in this binary are not in the hash.
Here is a likely non-exhaustive list of option names, please see the source file
/src/optinc.h to see the actual list:
borderLess buffered console cursorBlink cursorUnderline hold iconic
insecure intensityStyles iso14755 iso14755_52 jumpScroll loginShell
mapAlert meta8 mouseWheelScrollPage override_redirect pastableTabs
pointerBlank reverseVideo scrollBar scrollBar_floating scrollBar_right
scrollTtyKeypress scrollTtyOutput scrollWithBuffer secondaryScreen
secondaryScroll skipBuiltinGlyphs skipScroll transparent tripleclickwords
urgentOnBell utmpInhibit visualBell disablePasteBrackets
$value = $term->resource ($name[, $newval])
Returns the current resource value associated with a given name and optionally sets a
new value. Setting values is most useful in the "init" hook. Unset resources are
returned and accepted as "undef".
The new value must be properly encoded to a suitable character encoding before passing
it to this method. Similarly, the returned value may need to be converted from the
used encoding to text.
Resource names are as defined in src/rsinc.h. Colours can be specified as resource
names of the form "color+<index>", e.g. "color+5". (will likely change).
Please note that resource strings will currently only be freed when the terminal is
destroyed, so changing options frequently will eat memory.
Here is a likely non-exhaustive list of resource names, not all of which are supported
in every build, please see the source file /src/rsinc.h to see the actual list:
answerbackstring backgroundPixmap backspace_key blurradius
boldFont boldItalicFont borderLess buffered chdir color cursorBlink
cursorUnderline cutchars delete_key depth display_name embed ext_bwidth
fade font geometry hold iconName iconfile imFont imLocale inputMethod
insecure int_bwidth intensityStyles iso14755 iso14755_52 italicFont
jumpScroll letterSpace lineSpace loginShell mapAlert meta8 modifier
mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
secondaryScreen secondaryScroll shade skipBuiltinGlyphs skipScroll
term_name title transient_for transparent tripleclickwords urgentOnBell
utmpInhibit visualBell rewrapMode disablePasteBrackets
$value = $term->x_resource ($pattern)
Returns the X-Resource for the given pattern, excluding the program or class name,
i.e. "$term->x_resource ("boldFont")" should return the same value as used by this
instance of rxvt-unicode. Returns "undef" if no resource with that pattern exists.
Extensions that define extra resources also need to call this method to access their
values.
If the method is called on an extension object (basically, from an extension), then
the special prefix "%." will be replaced by the name of the extension and a dot, and
the lone string "%" will be replaced by the extension name itself. This makes it
possible to code extensions so you can rename them and get a new set of resources
without having to change the actual code.
This method should only be called during the "on_start" hook, as there is only one
resource database per display, and later invocations might return the wrong resources.
$value = $term->x_resource_boolean ($pattern)
Like "x_resource", above, but interprets the string value as a boolean and returns 1
for true values, 0 for false values and "undef" if the resource or option isn't
specified.
You should always use this method to parse boolean resources.
$action = $term->lookup_keysym ($keysym, $state)
Returns the action bound to key combination "($keysym, $state)", if a binding for it
exists, and "undef" otherwise.
$success = $term->bind_action ($key, $action)
Adds a key binding exactly as specified via a "keysym" resource. See the "keysym"
resource in the urxvt(1) manpage.
To add default bindings for actions, an extension should call "->bind_action" in its
"init" hook for every such binding. Doing it in the "init" hook allows users to
override or remove the binding again.
Example: the "searchable-scrollback" by default binds itself on "Meta-s", using
"$self->bind_action", which calls "$term->bind_action".
sub init {
my ($self) = @_;
$self->bind_action ("M-s" => "%:start");
}
$rend = $term->rstyle ([$new_rstyle])
Return and optionally change the current rendition. Text that is output by the
terminal application will use this style.
($row, $col) = $term->screen_cur ([$row, $col])
Return the current coordinates of the text cursor position and optionally set it
(which is usually bad as applications don't expect that).
($row, $col) = $term->selection_mark ([$row, $col])
($row, $col) = $term->selection_beg ([$row, $col])
($row, $col) = $term->selection_end ([$row, $col])
Return the current values of the selection mark, begin or end positions.
When arguments are given, then the selection coordinates are set to $row and $col, and
the selection screen is set to the current screen.
$screen = $term->selection_screen ([$screen])
Returns the current selection screen, and then optionally sets it.
$term->selection_make ($eventtime[, $rectangular])
Tries to make a selection as set by "selection_beg" and "selection_end". If
$rectangular is true (default: false), a rectangular selection will be made. This is
the preferred function to make a selection.
$success = $term->selection_grab ($eventtime[, $clipboard])
Try to acquire ownership of the primary (clipboard if $clipboard is true) selection
from the server. The corresponding text can be set with the next method. No visual
feedback will be given. This function is mostly useful from within "on_sel_grab"
hooks.
$oldtext = $term->selection ([$newtext, $clipboard])
Return the current selection (clipboard if $clipboard is true) text and optionally
replace it by $newtext.
$term->selection_clear ([$clipboard])
Revoke ownership of the primary (clipboard if $clipboard is true) selection.
$term->overlay_simple ($x, $y, $text)
Create a simple multi-line overlay box. See the next method for details.
$term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
Create a new (empty) overlay at the given position with the given width/height.
$rstyle defines the initial rendition style (default: "OVERLAY_RSTYLE").
If $border is 2 (default), then a decorative border will be put around the box.
If either $x or $y is negative, then this is counted from the right/bottom side,
respectively.
This method returns an urxvt::overlay object. The overlay will be visible as long as
the perl object is referenced.
The methods currently supported on "urxvt::overlay" objects are:
$overlay->set ($x, $y, $text[, $rend])
Similar to "$term->ROW_t" and "$term->ROW_r" in that it puts text in rxvt-
unicode's special encoding and an array of rendition values at a specific position
inside the overlay.
If $rend is missing, then the rendition will not be changed.
$overlay->hide
If visible, hide the overlay, but do not destroy it.
$overlay->show
If hidden, display the overlay again.
$popup = $term->popup ($event)
Creates a new "urxvt::popup" object that implements a popup menu. The $event must be
the event causing the menu to pop up (a button event, currently).
$cellwidth = $term->strwidth ($string)
Returns the number of screen-cells this string would need. Correctly accounts for wide
and combining characters.
$octets = $term->locale_encode ($string)
Convert the given text string into the corresponding locale encoding. Returns "undef"
if $string is "undef".
$string = $term->locale_decode ($octets)
Convert the given locale-encoded octets into a perl string. Returns "undef" if $octets
is "undef".
$term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
XORs the rendition values in the given span with the provided value (default:
"RS_RVid"), which MUST NOT contain font styles. Useful in refresh hooks to provide
effects similar to the selection.
$term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
Similar to "scr_xor_span", but xors a rectangle instead. Trailing whitespace will
additionally be xored with the $rstyle2, which defaults to "RS_RVid | RS_Uline", which
removes reverse video again and underlines it instead. Both styles MUST NOT contain
font styles.
$term->scr_bell
Ring the bell!
$term->scr_add_lines ($string)
Write the given text string to the screen, as if output by the application running
inside the terminal. It may not contain command sequences (escape codes - see
"cmd_parse" for that), but is free to use line feeds, carriage returns and tabs. The
string is a normal text string, not in locale-dependent encoding.
Normally its not a good idea to use this function, as programs might be confused by
changes in cursor position or scrolling. Its useful inside a "on_add_lines" hook,
though.
$term->scr_change_screen ($screen)
Switch to given screen - 0 primary, 1 secondary.
$term->cmd_parse ($octets)
Similar to "scr_add_lines", but the argument must be in the locale-specific encoding
of the terminal and can contain command sequences (escape codes) that will be
interpreted.
$term->tt_write ($octets)
Write the octets given in $octets to the tty (i.e. as user input to the program, see
"cmd_parse" for the opposite direction). To pass characters instead of octets, you
should convert your strings first to the locale-specific encoding using
"$term->locale_encode".
$term->tt_write_user_input ($octets)
Like "tt_write", but should be used when writing strings in response to the user
pressing a key, to invoke the additional actions requested by the user for that case
("tt_write" doesn't do that).
The typical use case would be inside "on_action" hooks.
$term->tt_paste ($octets)
Write the octets given in $octets to the tty as a paste, converting NL to CR and
bracketing the data with control sequences if bracketed paste mode is set.
$old_events = $term->pty_ev_events ([$new_events])
Replaces the event mask of the pty watcher by the given event mask. Can be used to
suppress input and output handling to the pty/tty. See the description of
"urxvt::timer->events". Make sure to always restore the previous value.
$fd = $term->pty_fd
Returns the master file descriptor for the pty in use, or "-1" if no pty is used.
$windowid = $term->parent
Return the window id of the toplevel window.
$windowid = $term->vt
Return the window id of the terminal window.
$term->vt_emask_add ($x_event_mask)
Adds the specified events to the vt event mask. Useful e.g. when you want to receive
pointer events all the times:
$term->vt_emask_add (urxvt::PointerMotionMask);
$term->set_urgency ($set)
Enable/disable the urgency hint on the toplevel window.
$term->focus_in
$term->focus_out
$term->key_press ($state, $keycode[, $time])
$term->key_release ($state, $keycode[, $time])
Deliver various fake events to to terminal.
$window_width = $term->width ([$new_value])
$window_height = $term->height ([$new_value])
$font_width = $term->fwidth ([$new_value])
$font_height = $term->fheight ([$new_value])
$font_ascent = $term->fbase ([$new_value])
$terminal_rows = $term->nrow ([$new_value])
$terminal_columns = $term->ncol ([$new_value])
$has_focus = $term->focus ([$new_value])
$is_mapped = $term->mapped ([$new_value])
$max_scrollback = $term->saveLines ([$new_value])
$nrow_plus_saveLines = $term->total_rows ([$new_value])
$topmost_scrollback_row = $term->top_row ([$new_value])
Return various integers describing terminal characteristics. If an argument is given,
changes the value and returns the previous one.
$x_display = $term->display_id
Return the DISPLAY used by rxvt-unicode.
$lc_ctype = $term->locale
Returns the LC_CTYPE category string used by this rxvt-unicode.
$env = $term->env
Returns a copy of the environment in effect for the terminal as a hashref similar to
"\%ENV".
@envv = $term->envv
Returns the environment as array of strings of the form "VAR=VALUE".
@argv = $term->argv
Return the argument vector as this terminal, similar to @ARGV, but includes the
program name as first element.
$modifiermask = $term->ModLevel3Mask
$modifiermask = $term->ModMetaMask
$modifiermask = $term->ModNumLockMask
Return the modifier masks corresponding to the "ISO Level 3 Shift" (often AltGr), the
meta key (often Alt) and the num lock key, if applicable.
$screen = $term->current_screen
Returns the currently displayed screen (0 primary, 1 secondary).
$cursor_is_hidden = $term->hidden_cursor
Returns whether the cursor is currently hidden or not.
$priv_modes = $term->priv_modes
Returns a bitset with the state of DEC private modes.
Example:
if ($term->priv_modes & urxvt::PrivMode_mouse_report) {
# mouse reporting is turned on
}
$view_start = $term->view_start ([$newvalue])
Returns the row number of the topmost displayed line and changes it, if an argument is
given. Values greater than or equal to 0 display the terminal contents. Lower values
scroll this many lines into the scrollback buffer.
$term->want_refresh
Requests a screen refresh. At the next opportunity, rxvt-unicode will compare the on-
screen display with its stored representation. If they differ, it redraws the
differences.
Used after changing terminal contents to display them.
$term->refresh_check
Checks if a refresh has been requested and, if so, schedules one.
$text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
Returns the text of the entire row with number $row_number. Row "$term->top_row" is
the topmost terminal line, row "$term->nrow-1" is the bottommost terminal line.
Nothing will be returned if a nonexistent line is requested.
If $new_text is specified, it will replace characters in the current line, starting at
column $start_col (default 0), which is useful to replace only parts of a line. The
font index in the rendition will automatically be updated.
$text is in a special encoding: tabs and wide characters that use more than one cell
when displayed are padded with $urxvt::NOCHAR (chr 65535) characters. Characters with
combining characters and other characters that do not fit into the normal text
encoding will be replaced with characters in the private use area.
You have to obey this encoding when changing text. The advantage is that "substr" and
similar functions work on screen cells and not on characters.
The methods "$term->special_encode" and "$term->special_decode" can be used to convert
normal strings into this encoding and vice versa.
$rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
Like "$term->ROW_t", but returns an arrayref with rendition bitsets. Rendition bitsets
contain information about colour, font, font styles and similar information. See also
"$term->ROW_t".
When setting rendition, the font mask will be ignored.
See the section on RENDITION, above.
$length = $term->ROW_l ($row_number[, $new_length])
Returns the number of screen cells that are in use ("the line length"). Unlike the
urxvt core, this returns "$term->ncol" if the line is joined with the following one.
$bool = $term->is_longer ($row_number)
Returns true if the row is part of a multiple-row logical "line" (i.e. joined with
the following row), which means all characters are in use and it is continued on the
next row (and possibly a continuation of the previous row(s)).
$line = $term->line ($row_number)
Create and return a new "urxvt::line" object that stores information about the logical
line that row $row_number is part of. It supports the following methods:
$text = $line->t ([$new_text])
Returns or replaces the full text of the line, similar to "ROW_t"
$rend = $line->r ([$new_rend])
Returns or replaces the full rendition array of the line, similar to "ROW_r"
$length = $line->l
Returns the length of the line in cells, similar to "ROW_l".
$rownum = $line->beg
$rownum = $line->end
Return the row number of the first/last row of the line, respectively.
$offset = $line->offset_of ($row, $col)
Returns the character offset of the given row|col pair within the logical line.
Works for rows outside the line, too, and returns corresponding offsets outside
the string.
($row, $col) = $line->coord_of ($offset)
Translates a string offset into terminal coordinates again.
$text = $term->special_encode ($string)
Converts a perl string into the special encoding used by rxvt-unicode, where one
character corresponds to one screen cell. See "$term->ROW_t" for details.
$string = $term->special_decode ($text)
Converts rxvt-unicode's text representation into a perl string. See "$term->ROW_t" for
details.
$success = $term->grab_button ($button, $modifiermask[, $window = $term->vt])
$term->ungrab_button ($button, $modifiermask[, $window = $term->vt])
Register/unregister a synchronous button grab. See the XGrabButton manpage.
$success = $term->grab ($eventtime[, $sync])
Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or synchronous ($sync
is true). Also remembers the grab timestamp.
$term->allow_events_async
Calls XAllowEvents with AsyncBoth for the most recent grab.
$term->allow_events_sync
Calls XAllowEvents with SyncBoth for the most recent grab.
$term->allow_events_replay
Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most recent
grab.
$term->ungrab
Calls XUngrabPointer and XUngrabKeyboard for the most recent grab. Is called
automatically on evaluation errors, as it is better to lose the grab in the error case
as the session.
$atom = $term->XInternAtom ($atom_name[, $only_if_exists])
$atom_name = $term->XGetAtomName ($atom)
@atoms = $term->XListProperties ($window)
($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)
$term->XChangeProperty ($window, $property, $type, $format, $octets)
$term->XDeleteProperty ($window, $property)
$window = $term->DefaultRootWindow
$term->XReparentWindow ($window, $parent, [$x, $y])
$term->XMapWindow ($window)
$term->XUnmapWindow ($window)
$term->XMoveResizeWindow ($window, $x, $y, $width, $height)
($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)
$term->XChangeInput ($window, $add_events[, $del_events])
$keysym = $term->XStringToKeysym ($string)
$string = $term->XKeysymToString ($keysym)
Various X or X-related functions. The $term object only serves as the source of the
display, otherwise those functions map more-or-less directly onto the X functions of
the same name.
The "urxvt::popup" Class
$popup->add_title ($title)
Adds a non-clickable title to the popup.
$popup->add_separator ([$sepchr])
Creates a separator, optionally using the character given as $sepchr.
$popup->add_button ($text, $cb)
Adds a clickable button to the popup. $cb is called whenever it is selected.
$popup->add_toggle ($text, $initial_value, $cb)
Adds a toggle/checkbox item to the popup. The callback gets called whenever it gets
toggled, with a boolean indicating its new value as its first argument.
$popup->show
Displays the popup (which is initially hidden).
The "urxvt::timer" Class
This class implements timer watchers/events. Time is represented as a fractional number of
seconds since the epoch. Example:
$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
$term->{timer} = urxvt::timer
->new
->interval (1)
->cb (sub {
$term->{overlay}->set (0, 0,
sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
});
$timer = new urxvt::timer
Create a new timer object in started state. It is scheduled to fire immediately.
$timer = $timer->cb (sub { my ($timer) = @_; ... })
Set the callback to be called when the timer triggers.
$timer = $timer->set ($tstamp[, $interval])
Set the time the event is generated to $tstamp (and optionally specifies a new
$interval).
$timer = $timer->interval ($interval)
By default (and when $interval is 0), the timer will automatically stop after it has
fired once. If $interval is non-zero, then the timer is automatically rescheduled at
the given intervals.
$timer = $timer->start
Start the timer.
$timer = $timer->start ($tstamp[, $interval])
Set the event trigger time to $tstamp and start the timer. Optionally also replaces
the interval.
$timer = $timer->after ($delay[, $interval])
Like "start", but sets the expiry timer to c<urxvt::NOW + $delay>.
$timer = $timer->stop
Stop the timer.
The "urxvt::iow" Class
This class implements io watchers/events. Example:
$term->{socket} = ...
$term->{iow} = urxvt::iow
->new
->fd (fileno $term->{socket})
->events (urxvt::EV_READ)
->start
->cb (sub {
my ($iow, $revents) = @_;
# $revents must be 1 here, no need to check
sysread $term->{socket}, my $buf, 8192
or end-of-file;
});
$iow = new urxvt::iow
Create a new io watcher object in stopped state.
$iow = $iow->cb (sub { my ($iow, $reventmask) = @_; ... })
Set the callback to be called when io events are triggered. $reventmask is a bitset as
described in the "events" method.
$iow = $iow->fd ($fd)
Set the file descriptor (not handle) to watch.
$iow = $iow->events ($eventmask)
Set the event mask to watch. The only allowed values are "urxvt::EV_READ" and
"urxvt::EV_WRITE", which might be ORed together, or "urxvt::EV_NONE".
$iow = $iow->start
Start watching for requested events on the given handle.
$iow = $iow->stop
Stop watching for events on the given file handle.
The "urxvt::iw" Class
This class implements idle watchers, that get called automatically when the process is
idle. They should return as fast as possible, after doing some useful work.
$iw = new urxvt::iw
Create a new idle watcher object in stopped state.
$iw = $iw->cb (sub { my ($iw) = @_; ... })
Set the callback to be called when the watcher triggers.
$timer = $timer->start
Start the watcher.
$timer = $timer->stop
Stop the watcher.
The "urxvt::pw" Class
This class implements process watchers. They create an event whenever a process exits,
after which they stop automatically.
my $pid = fork;
...
$term->{pw} = urxvt::pw
->new
->start ($pid)
->cb (sub {
my ($pw, $exit_status) = @_;
...
});
$pw = new urxvt::pw
Create a new process watcher in stopped state.
$pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
Set the callback to be called when the timer triggers.
$pw = $timer->start ($pid)
Tells the watcher to start watching for process $pid.
$pw = $pw->stop
Stop the watcher.
ENVIRONMENT
URXVT_PERL_VERBOSITY
This variable controls the verbosity level of the perl extension. Higher numbers indicate
more verbose output.
== 0 - fatal messages only
>= 2 - general warnings (default level)
>= 3 - script loading and management
>=10 - all called hooks
>=11 - hook return values
AUTHOR
Marc Lehmann <schmorp@schmorp.de>
http://software.schmorp.de/pkg/rxvt-unicode